{"slug":"","question":"Melanism in jaguars is caused by a dominant mutation in which gene?","topic":"COAT GENETICS","answer_a":"MC1R (melanocortin-1 receptor)","answer_b":"ASIP (agouti signaling protein)","answer_c":"TYR (tyrosinase)","answer_d":"KIT (mast/stem cell growth factor receptor)","correct_index":1,"fact":"In jaguars, melanism is caused by a dominant mutation in ASIP. In leopards it's a DIFFERENT, recessive mutation in ASIP. Two separate evolutionary origins for what looks like the same 'black panther' trait."}